Michael Stock\, graduate student in the Physics Departmen
t\, will present the department seminar. His talk is titled\, 'Interferome
tric Observations of Intra-cloud Lightning.' A state of the art lightning
interferometer system at Langmuir Laboratory uses very wide bandwidth meas
urements to provide exceptional resolution and sensitivity to processes th
at comprise each flash. The added sensitivity allows the detailed study of
features of lightning flashes which were difficult or impossible to study
before. 4 p.m. in Workman 101.